About the Authors

Liang Liu, Shi-Jie Chen
Department of Physics and Department of Biochemistry, University of Missouri, Columbia, Missouri, United States of America

Corresponding Author

chenshi@missouri.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LL SJC. Performed the experiments: LL. Analyzed the data: LL SJC. Wrote the paper: LL SCJ.